Stopcock



lG. T. CONRATH.

STOPCOCK.

APPLlc-Anow FAILED Nm3. 20. ma. Patented May 16 1922.'

2 SHEETS-SHEET l 2f 239 l slm Z0 27,/ v/` :l if

IIIIIIIHI E; noauto/L G. T. CONRATH. STOPCOCK.

. APPLICATION FILED MAR. 20| ISIS- 1,416 `,173.

Patented May .16, 1922. I

' 2 SHEETS-SHEET 2.

GEORGE T. CONRATH, OF BOWLG GREEN, GHIG.

sroroocit.

i,anatraAq Specification of Letters Patent.

Patented May 16, 1922.

Application filed March 20, 1918. Serial No. 223,624.

T0 all whom t may concern:

Be it lrnown that 1, Grenen T. Cona-ATH, a citizen ot the United States, residing Bowling Green, in the county et `Wood and State et Ohio, have invented vnew and useful improvements inStopc-oclrs, orl which the following is a specification.

This invention relates to stop cocks, and has Jfor its primary object to produce a stopcoclr in which the plug` will be firmly-re tained on its seat, but readily turned without danger ot breaking either kthe plug or the casing therefor.

Other objects and advantages will appear as the nature oit the invention is better understood, reference being had tothe accompanying drawings7 in which,

Figure 1 is an approximately vertical longitudinal sectional view through a stopcocl: constructed in accordance with this invention.

Figure 2 is a top plan view or the same.

Figure 3 is a view of the removable bridge piece.

Figure il is an approximately central longitudinal sectional view through a-modiiication.

Figure is Figure 6 is an end bein g removed. I

Figure 7 is a perspective view oit the bridge piece employed.

Figure S is a side elevation, tion of a turthcr modiiication.

Figure 9 is a sectional view through a still turther modilication.

Figure 1() is a similar view modification.

Figure 11 is a top planview ot the same.

`Figure 12 is an elevation 'ot the valve plug.

The easing .tor the valve or stop-cock is indicated by the numeral 15 and is provided with alining passages towhich the ends of the usual pipes are connected. The valve or plug chamber extends entirely through the casing, and is indicated by the numeral 1G. The chamber is iiared or gradually decreased in cross sectional diameter from the upper to the lower ends thereof so as to snugly receive therein the tapering plug valve 17. The valve, at its reduced end is integrally formed with a lug 18, which, of course, is arranged outward of the casing 15, and this lug provides the turning element for the plug valve 17. The valve 17, upon its wider a top plan view of the same. Y view, the bridge piece of a further partly in sec-` end is centrally formed with an outstanding enlargement in the nature ot a boss 19. `The casing 15, at theupper face thereoi` is provided viith a pair of spaced alining threaded openings 2O which are adapted to register with openings 21 provided in the ends of an arched'bridge piece Ther alinopenings in the bridge piece and in the casing receive the threaded stems 23 ot bolt members 24 whereby the bridge piece 22fis removably secured to the valvel casing. rhe bridge piece is centrally provided with a threaded opening 25 vreceiving therein a threaded member 26, the same having its inner end rounded as at 2.7 and contacting centrally with the boss 19. The outer end of the member 26 is squared or otherwise shaped to receive or arrange a similar element whereby the said member 2G may be turned to force the same into contact with thefboss on the widened end ot the valve to torce the said valve into tight engagement with the-walls of the seat ot the chamber 17.

1n Figures a to 7 of the drawings I have illustrated a slightmodiiication, the valve casing 28 and the valve `29 vbeing subst-am tially similar to that previously described, except with the casing 28, uponv its upper surface is provided with ank annular extension 30 that has, upon-its metrically opposed outstanding flanges 31- 3l., and spaces 32 between the flanges. Each of the flanges, upon its inner tace is approximately centrally formed with a depression.

The bridge piece is indicated by the nun'ieral 3i and has its ends provided with downturned portions formed with inturned lugs 36. the same may between the' flanges y bridge piece may be turned to bring the lugs 36 under the flanges 31 and also to bring the said lugs into the depressions 33 which provide pockets' tor the' said lugs. The bridgepiece 34 is centrally provided with a threaded opening receiving therein a threaded element 37 which contacts with the boss 38 on the widened end of the plug valve 29.

be received` inl the spaces 32 In Figure 8 the construction is substan-A tially similar to that illustrated in Figures 1, 2 and 3 ot the drawings, the arched bridge member 39 being connected to the upper face ot the valve casing 40 by removable bolts 41. rihe bridge is centrallyl provided with a comparatively large threaded opening 42 which receives therein a threaded member 43 The lugs are spaced so that y 9 5 31 and thereafter the upper edge diahaving a turning head 44. The member L13 has its inner end provided with a pocket 45 within which is received a boss LG on the plug valve 47.

ln Figure 9 the tapering plug valve 50 has its reduced end centrally provided with a lug 5l which is of a greater length than the lugs employed on the plug valves previously described, but in other respects the valve 50 is similar to the valves previously described. The valve casing 52, upon its upper end is provided with an annular eX- tension 53 having exterior threads, and these threads are engaged by inner threads provided upon a .llange 5ft on the ends or periphery of the bridge member 55. The bridge member, in this instance is in the nature oil" a cap and is centrally provided with a threaded opening through which passes a' threaded binding element 5G that engages with the boss 57 on the widened end of the plug valve 50. The lower end ot the casing 52 is provided with a threaded annular extension 52 engaged by a flanged nut 53. The nut is provided with a central round opening through which the cross sectional round portion ol the stem or lug 5l passes, and the said nut has arranged therein an annular flanged gasket 54; which contacts with a packing 55 forcing the same against the lug 5l and the under face ot the valve casing inward ot the annular meinm ber 52.

In Figures l and ll is substantially similar to those previously described. The cock or valve casing 59, upon its upper face is provided with an the plug valve 58 annular extension 60 having inwardly eX tending spaced flanges (il-(3l and providing spaces 62 between the said flange. The arched bridge piece is indicated by the numeral G3 and has its ends provided with outstanding portions which may be termed lugs and which are indicated by the numerals G-l. rllhe bridge is so arranged as the lugs thereof. being passed through the spaces G2 below the flanges (il and there after turned to position the said lugs centrally of the flanges and permit ot the lugs being received in depressions G5 which are arranged centrally on the inner faces of the lugs 6l. The bridge piece 63 is centrally provided with a threaded opening through which passes a threaded binding element "tacting with the boss G7 to permit of G6 that has its inner and rounded end conon the upper and widened end of the plug valve 58.

In all instances it will be noted that the valve extends entirely through the valve easing and has its reduced end provided with a lug designed to receive a pivot or other instrument whereby the valve may be operated. All of the plugs, upon their widened ends are provided with bosses and all ol the bosses are contacted with adjustable elements to force the valves primarily in their seats. The valves, while properly engaging' with their seats may be easily turned and from experience Ihave found that this construction prevents the entrance of frost or rust between the valve and casing so that neither the plugs nor casing can be injured from such causes and will amply withstand the pressure to which they are subjected.

It is believed, from the foregoing description that the advantages of the construction will be understood and appreciated without further detailed description, it being understood that the valve is self grinding,

Havin.; thus described the invention, what l claim is:

A valve casing` having a tapered opening extending therethrough and providing a valve seat, a tapered plug valve, the ground surtace oit which directly contacts with the seat, permitting of locking engagement, said valve having its reduced end centrally provided with an outstanding lug, said casing at the widened end of the opening therein being formed with an extension having spaced flanges on the ends thereof, said flanges, upon their inner faces being 'formed with recesses intermediate of the openings between the flanges, a bridge member incl riding downwardly and inwardly extending` lugs proportioned fior reception between the flanges and tor reception within the depressions,upon turning the bridge about the longitudinal axis ot the plug, and an element threaded through the bridge and act ing to produce an inward thrust on the larger end of the plug for seating the latter, and an outward thrust between the lugs and the recessed portions of the flanges.

In testimony whereof I alix my signatureA GEORGE T. CONRATIT 

